Adsorption of Ammonium Sulfate Using Fabricated Zeolite from Waste Sludge of Water Treatment Plant

Abstract:

This work studied an adsorption of ammonium sulfate (NH₄)₂SO₄ from synthesized zeolite, with 3M NaOH at temperature of 90°C for 9 h, from waste sludge of water treatment plant. The scanning electron microscopic analysis revealed that the synthesized zeolite was observed to be cubic in shape. For adsorption capacity, the pH was varied at 4, 5, 6, 7 and 8, the contact times used were 0, 5, 10, 15, 30, 45 and 60 min, and the initial (NH₄)₂SO₄ concentrations used ranged from 60-120 mg/L. The recommended pH and contact time were 8 and 15 min, respectively. Adsorption isotherm for synthesized zeolite was fitted to Langmuir model more effectively than Freundlich model. The K values for Langmuir and Freundlich isotherm was 0.061 and 1.751 L/mg with R² values of 0.989 and 0.965, respectively. The maximum adsorption capacity was 9.597 mg/g obtained by the Langmuir isotherm. The work has concluded that the fabricated zeolite could successfully be used for adsorption of ammonium sulfate.

• Periodical: Advanced Materials Research (Volume 410)
• Pages: 220-223
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.410.220
• Online since: November 2011
• Authors: Kwannate Sombatsompop, Thun Jeensawak, Pongsachan Sonpai, Adithep Wangbooncong, Jeatana Wongwichien, Suwimol Asavapisit
• Keywords: Absorption Isotherm, Ammonium Sulphate, Water Treatment Sludge, Zeolite

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